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Finding the Fourth Proportional to 379,361.48, 523,354.38 and 228,371

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Solution

The fourth proportional to 379,361.48, 523,354.38 and 228,371 is: 315,052.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,361.48 : 523,354.38 = 228,371 : x
  2. Step 2: Convert to fraction form
    379,361.48/523,354.38 = 228,371/x
  3. Step 3: Cross multiply
    379,361.48x = 523,354.38 × 228,371
  4. Step 4: Simplify right side
    379,361.48x = 119,518,963,114.98
  5. Step 5: Solve for x
    x = 119,518,963,114.98/379,361.48
  6. Step 6: Final answer
    x = 315,052.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.